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28 lines
515 B
28 lines
515 B
#include <iostream>
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#include <vector>
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using namespace std;
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int main(){
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cout << "请输入一个算式，包含加减乘除乘方括号:" << endl;
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string s;
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cin >> s;
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vector<double> num;
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vector<char> symbol;
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for (auto x:s){
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if((x>47)&&(x<58)){
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if(symbol.begin()==symbol.end()){//判断字符栈是否为空
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num.push_back(x-'0');
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}elif(*(symbol.end()-1)=='46'){
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*(num.end()-1)=atof((to_string(*num.end()-1)).c_str()+x);
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}
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}
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}
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for (double a:num){
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cout << a << endl;
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}
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return 0;
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}
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